Finishing roll polisher



Sept. 15, 1931. D. w 5 ET AL 1,823,436

FINISHING ROLL POLISHER Filed Aug. 27, 1929 6 throughout the severalviews i Patnted Sept. 15,1931

U SH DAVID H; WILLIAMS AND owEN L. BECK, 0F APOLLO, PENNSYLVANIAFINIsHING ROLL POLISHER Application filed August 27, 1929." Serial No.388,706.

1 Our invention relates to a'polishing apparatus designed for removingany inequalities from the peripheries of finishing rolls of metal sheetrolling mills, to assure perfectly finished metal sheets after thefinish rolling operation, I

The usual method employed for polishing finishing rolls consists ofsecuring the polishhis stone adjacent to the end of a lever which isfulcrumed and manipulated by the workman so that the polishing stone ispassed over and pressed against the periphery of the roll, whilethelatter is rotating. This method is very ineflicient, renders the millieigiporarily inoperative, and entails arduous a or. i c J Importantobjects of the invention are to provide a'finishin'g roll polisher ofthe char acter described which is automatic in its 'operation,which willfunction during the sheet rolling operation, which may be readilyinstalled in a rollingmill already erected, aswell, as form a componentpart of a new rolling mill structure, which may 1 be readily removedfrom the rolling mill when required, or replaced to the latter, and,which may be adjusted to operate on the entire periphery of the roll orany de sired portion thereof.

: Further objects of the inventionareto provide a device of the classstated,'which is simple in its construction and arrangement, strong,durable and efficient in its use, positive in its action, andcomparatively in 5 expensive to manufacture, instalh'operate andmaintain;

- With the foregoing andother objects in pview which will appear as the,description proceeds, the invention resides '1 in the com- 0 binatio'nand arrangement of parts and in thedetails of construction hereinafterdescribed and claimed, itfbeing understood that changes in the preciseembodiment of theinvention hereinafter disclosed can be made 'witl'iinthe scopeof'what is claimed Without departing fronrthe spirit of the Isupported on the bracket 7 V The hub 11, of

' invention. I

In the '(rawings ,whereln like nulnerals of reference designatecorrespond ng parts Figure 1 is a front elevatio-nal view of a rollingmill structure embodying the presentinvention.

TES- PATENT OFFICE Figure 2 is an enlarged side View of the shiftermember, and of associated parts. I

Figure 3 is an enlarged side view of the polisher saddle carrying thepolishing stones.

' Figure 4 is an enlarged side view of the suspension arms and ofassociated parts.

Figure 5 is an enlarged view, partly in cross section, of the slidebearing and its supporting shaft.

Referring in detail structure, in which a pair of associated rolls,indicated at 2 and 3, are revolubly mounted.

The rolls 2 and 3 are disposed horizontally to the drawings 1 de notesthe stand or frame of a rolling mill with the former above the latter,and tog.

gether' with the frame'l, are of a construe tion" and operation nowcommonly employed in rolling mill practice.

The drawings and description illustrate and describe the adaptation ofthe present invention to the front of the rolling mill structure and asapplied to the top roll 2 only. It being obvious that the lower roll3'is also equipped with an-identically constructed polishing apparatusdisposed at a connecting end 5, which projects fromthe adjacent side ofthe frame 1. 1 v

The'feed screw, 4 is driven by an electric motor 6, which is suitablysupported on a One 'iendioffthe feed screw is squared to provide bracket7 fixed to the frame 1. The motor 6 is provided with a wor1n8, whichmeshes with a worm wheel 9. The latter is jour: naled for rotation in asuitable bearing 10 the worm wheel 9 is formed with a square socket12,.which is adapted for the recep- 'tionof the squared connecting end5, of the feed screw 4:.- The operation of the'motor 6, through itsconnection with the feed screw 4, in the manner stated, will impartrotation to the latter. 7 I h The feed" screw 4 is maintained in itsposition inv the frame 1,'by a releasable collar 13, which abutsagainst-the inner i socket l2 prevents its movementinthe other side ofthe frame. 1. fThe collar 13 prevents the longitudinal movement of thefeed screw ,4, in one direction, and the engagement of the squareconnecting end 5 in the hub direction.

The feed screw .4 is

V prevent overheating of the feed screw'd due toits proximity tother0112.- A water supply element 14 connects with one end of the feedscrew 51-, and the water passes from the latter through apertures 15,which are ,formed in the projecting, squared connecting end 5 thereof.

The shifter member 16 further includes a 1 rearwardly projecting yoke 20which engagesjthe centerportion 21 of the slide bearing 17. Thelatter isalso formed -,to provide end portions 22 and 23, whichtogether with pthe center portion 21, are divided from each other by respective annularflanges 24. .7

The slide bearing 17 is slidablymounted on a tubular supporting shaft25. The latter extends parallel to the feed screw 1, but is disposedrearwardly of and above the latter. The ends of the supporting shaft 25are removably'mounted in the bearing slots 26, which are formed in thefree front ends of respective suspension arms 27 .e The top ends oftheflbearingslots 26 are open and are coveredbyplates 28 to maintainrespective ends offthe supporting shaft 25 in said bearing slots 26. Oneendof each of the plates 28 is pivot-ally connected, as at 29,

to the top of respective suspension arms 27 'Y The other end of theplate 28.is formed with an open slot 30,'which engages a bolt 31'threadedlymounted in the top of suspension arms 27. The partial releaseof the boltsv 31 will allow the plates 28 to be swung on their pivotalconnections 29 and permit the removal of the supporting shaft 25 fromthe bearing slots 26 in thesuspension arms The rear ends of thesuspension arms 27 arepivotally connected by bolts 27 to the frame 1 todispose the former at respective ends of the top roll 2. 'Thejsuspensionarms I tubular permitting of the circulation of water therethrough to 27are curved longitudinally to conform to the curvature of the top roll 2.

The supporting shaft 25 is hollow to allow the circulation of watertherethrough to preventoverheating due to its proximity to the top roll2. The tubular supporting shaft 25 is formed with closed ends, and is"provided with aflwater inlet connection 32 and a water outletconnection 33. The inlet and outlet connections 32' and 33 are disposedadjacent to the ends of the supporting shaft 25.

A saddle 3 1, formed with an open bearing, groove 34 "on its outer side,is carried "by each of the "endportions 22 and23, of

the slidebearing 17, at respective sides of the shifter member 16. Theend portions 22 and. 23 are mounted in the bearing grOOVQSBl' ofrespective saddles 34, and the latter may be readilyremoved or replacedby elevating the supporting shaft-25, in a manner permitted by thelatters connection with the suspension arms 27, to provide clearancebetween the supporting shaft 25 and the top roll 2. I

Each of the saddles 34 carries a pair of horizontally extending,polishing stones 35 which are of a type now commonly employed forpolishing sheet mill rolls. Each of the saddles 3a is formed on itsinner side with a a pair of grooves 36 for the reception of thepolishing stones 35. The latter have tapering sides and the side wallsof the grooves 35are correspondingly tapered to maintain the polishingstones 35 in said grooves 36,, and to permit of and facilitate theremoval and replacement of the polishing stones 35 when required.

Each of the saddles 34 is positioned rearwardly of the slide bearing 17,and both of .roll 2, one of the polishing stones 35 being disposed abovethe slide bearing 17 and the other below the latter.

As it isnecessary for the polishing stones 35 to operate under greatpressure to effect the polishing operation, air pressure is providedthrough a pair of vertically disposed air cylinders 37. An air cylinder37 is fixed at each side of the frame 1, and includes a piston and apiston rod 38, which has its loweren'dpivot'ally connected, as at 39, adjacent' to the front free end of respective suspension arms 27. p

The cylinders 37 are joined with suitable air supply and controlelements for project- :ing the piston rods 38 to exert pressure uponfrom the polishing stones 35 and to elevate the respective suspensionarms 27 when desired. The rear'end's of the suspension arms 127 areprovided with elongated slots 40 for parallel disposed,

thepassage of. the pivoting bolts 27', to allownecessary compensatorymovements of the suspension arms 27 whilethe piston rods member 16threadedly engages the feed screw 4, the shifter member 16 will travel valong the feed screw 4 in eitherdirection depending on the directionofrotation of the feed screw 4. The travel of the shifter member 16,will, of course, slide the slide bearing 17 in the same direction alongthe supportingsha-ft 25. The saddles 34 with the polishing stones 35,being carried by the slide bearing 17, will likewise shift with thelatter.

p The motor 6 is of a reversible type, now in common use, and iscontrolled by the functions of a reversing switch 41, which is fixed 7to the frame 1 and operated by a depending switch lever 42. Thelower'end of the latter is formed to provide a fork 43 which straddles aflat, horizontally disposed operating bar 44.

The operating bar 44 extends parallel to the top roll 2 and is mountedfor longitudinal movement in apertures 45 provided the shifter member16.

in respective sides of the frame 1. A detachable leg 46 depends from thecenter of the bar 44, and the lower end thereof is loosely engagedbetween a pair of cars 47 formed on the top of the yoke 20, of Thehorizontal movement of the latter during the polish- -ing operation willimpart like horizontal movement to the operating bar 44. The looseengagement of the leg 46 in the ears 47, will permit the necessaryvacillation of the shifter member 16 duringthe polishing operation,without interference with or imparting such vacillatory movement to theoperating bar 44. p

Apair of removable actuating lugs 48, are fixed in spaced relation onthe top edge of the operating bar 44. The latter is formed 1 with aplurality of apertures 49 permitting V the spacing adjustment of theactuating lugs The operating bar 44 passes through the forked lower end43 of the switch lever 42,

- and the actuating lugs 48 are disposed on respective sides thereof.The purpose of the actuating lugs 48 is to engage and shift the switchlever 42 in both directions to operate the switch 41, which controls thedirectionrof rotation of the motor 6.

The relative positions of the actuating lugs48 on the operating bar 44,is such that one of the lugs 48 will engage and shift the switch lever42 to reverse the operation of themotor 6 when the polishing devices I Ion the slide shaft 17 have'reached a desired stones 85, slide bearing17, and the operating bar 44, will shift constantly back and forth aslong as the motor 6 is operating. The operation is entirely automaticand is performed during the sheet rolling operation.

Such continuous polishing operation will maintain the roll in perfectcondition for rolling operations, and the latter need not be suspendedto permit the polishing operation.

It will here be noted that all parts of the invention are readilyremovable from the rolling mill, thereby permitting access to the rollswhen heating, repairing or changing the latter.

The present invention provides a most efficient device of its kind,which will operate automatically for maintaining the rolls in perfectcondition at all times.

What we claim is:

In combination, a roll polisher, of the character described, comprisinga revolubly mounted tubular feed screw, a removably mounted tubularsupporting shaft extending parallel to said feed screw, a slide bearingbeing longitudinally shiftable on said supporting shaft, a shiftermember including a hinged bearing threadedly engaging said feed screw,said shifter member further ineluding a yoke engaging said slidebearing, aremo'vable saddle carried at each end of said slide bearing, apair of polishing mem bers removably mounted in each of said saddles,suspension arms for said supporting shaft, air operated elementsconnecting with said suspension arms for imparting pressure to saidpolishing members, said feed screw and said supporting shaft beingprovided with inlets and outlets to permit of the pas sage of a coolingmedium through same.

In testimony whereof we ailix our signatures.

DAVID H. \VILLIAMS. GIVEN L. BECK.

